CN111335146B - Frame type replaceable buckling-restrained damping energy dissipation device and using method thereof - Google Patents
Frame type replaceable buckling-restrained damping energy dissipation device and using method thereof Download PDFInfo
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- CN111335146B CN111335146B CN202010161398.2A CN202010161398A CN111335146B CN 111335146 B CN111335146 B CN 111335146B CN 202010161398 A CN202010161398 A CN 202010161398A CN 111335146 B CN111335146 B CN 111335146B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
A frame type replaceable buckling-restrained damping energy dissipation device relates to the technical field of assembled bridge earthquake-resistant and shock-absorption devices and earthquake-resistant and disaster-reduction high-performance rapid-repair building materials, and comprises an upper energy dissipation steel bar connector, a mechanical connecting piece, an energy dissipation steel bar, a frame type limiting connecting mechanism, a connecting nut and a lower energy dissipation steel bar connector; a use method of a frame-type replaceable buckling-restrained damping energy dissipation device comprises the following steps: comprises a pre-earthquake installation step and a post-earthquake replacement step. The energy consumption capacity of the section-assembled pier can be improved, the problem that the built-in energy consumption steel bars are not easy to repair after an earthquake can be solved, the use function of the damaged pier can be quickly repaired after the earthquake, the energy consumption steel bars can be prevented from buckling under pressure through the frame type buckling-restrained connection, the problem that the replaceable energy consumption steel bars cannot fully exert the self anti-seismic performance due to the fact that the replaceable energy consumption steel bars are easy to buckle under the earthquake action is solved, and the anti-seismic performance of the section-assembled pier is improved.
Description
Technical Field
The invention relates to the technical field of assembled bridge earthquake-resistant and earthquake-reduction and isolation devices and earthquake-resistant and disaster-reduction high-performance rapid-repair building materials, in particular to a frame-type replaceable buckling-prevention and shock-reduction energy dissipation device and a using method thereof.
Background
The fabricated bridge structure is gradually raised in bridge construction with reliable component quality and convenient construction method, and the prefabricated assembled pier is widely applied to urban elevated bridges and sea-crossing bridges as the main construction form of the current fabricated bridge substructure. The prefabricated pier of assembling divide into whole and segment two kinds of forms, and wherein the prefabricated pier of assembling of segment type has set up dry joint between the segment, assembles through back-tensioned unbonded prestressing tendons and forms, compares in traditional whole cast-in-place pier, and the pier is assembled to the segment has good post-earthquake from the reset capability because of prestressing tendons's existence, nevertheless because dry joint opens, can't form the plastic hinge in the pier bottom potential plastic hinge district, makes its power consumption ability worsen, end segment concrete damage comparatively serious.
At present, one of the most main measures for improving the energy consumption capability of the pier assembled by the segments is to arrange energy consumption reinforcing steel bars among a plurality of key segments at the bottom, the arrangement mode can effectively improve the energy consumption capability of the pier, but the residual displacement of the pier column is increased, and most of the energy consumption reinforcing steel bars arranged inside the segments are not easy to repair after the earthquake action.
In order to reduce the loss caused by pier damage under the action of an earthquake, on the basis of controlling the self damage degree of the structure, expert and scholars propose that the earthquake-proof design is developed towards a design concept directly oriented to the post-earthquake restorable function, namely, the whole life cycle performance control of the structure is considered in the initial earthquake-proof design, so that the post-earthquake use function restorable of the pier is ensured, the post-earthquake damage of the pier is reduced, and the quick repair of a structural vulnerable component is realized. The concept is provided, so that the research on developing the replaceable energy consumption device is significant in promoting the development of the segment-assembled pier to restore the function and quickly repair the structure after the earthquake.
Disclosure of Invention
The invention provides a frame-type replaceable buckling-restrained damping and energy-dissipating device and a using method thereof, aiming at solving the problems in the prior art, the device not only can improve the energy-dissipating capacity of a section-assembled pier, but also can solve the problem that built-in energy-dissipating steel bars are not easy to repair after an earthquake, so that the quick repair of the using function of the damaged pier after the earthquake is realized, the energy-dissipating steel bars can be prevented from buckling under pressure through frame-type buckling-restrained connection, the problem that the replaceable energy-dissipating steel bars cannot fully exert the self anti-seismic performance due to easy buckling under the earthquake action is solved, and the anti-seismic performance of the section-assembled pier is improved.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a frame type replaceable buckling-restrained damping energy dissipation device comprises an upper energy dissipation steel bar joint, a mechanical connecting piece, an energy dissipation steel bar, a frame type limiting connecting mechanism, a connecting nut and a lower energy dissipation steel bar joint, wherein the frame type limiting connecting mechanism is hollow inside and forms a hollow section, through holes penetrating through the upper end face and the lower end face of the frame type limiting connecting mechanism are respectively arranged at the upper end and the lower end of the hollow section, an upper insertion hole is formed in the through hole at the upper end, a lower insertion hole is formed in the through hole at the lower end, an upper group of connecting nut and a lower group of connecting nut are further arranged in the hollow section, the lower end of the upper energy dissipation steel bar joint is detachably and fixedly connected with the mechanical connecting piece, the upper end of the energy dissipation steel bar is detachably and fixedly connected with the mechanical connecting piece, a lower thread section is arranged at the lower end of, the upper end of the lower energy consumption steel bar joint extends into the lower insertion opening and is in threaded connection with the connecting nut positioned below, and the outer diameter of the connecting nut is larger than the diameters of the upper insertion opening and the lower insertion opening.
Preferably, the mechanical connecting piece is a mechanical connecting sleeve, the surface of the inner side wall of the mechanical connecting sleeve is provided with an internal thread, the lower end of the upper energy consumption steel bar joint is provided with an external thread and is in threaded connection with the upper part of the surface of the inner side wall of the mechanical connecting sleeve, and the upper end of the energy consumption steel bar is provided with an upper thread section and is in threaded connection with the lower part of the surface of the inner side wall of the mechanical connecting sleeve.
Preferably, the frame-type limiting connecting mechanism is a plate-shaped structure made of steel materials, and hollow sections penetrating through the front end face and the rear end face are arranged on the plate-shaped structure.
Preferably, the frame-type limiting connection mechanism is a tubular structure made of steel materials, an external thread is arranged at the upper end of the surface of the outer side wall of the tubular structure, an end cover for closing the upper end of the tubular structure is connected to the external thread in a threaded manner, an upper insertion hole is formed in the center of the end cover, the bottom end of the tubular structure is closed, a lower insertion hole is formed in the center of the bottom end, and a connection nut located below is coaxial with the lower insertion hole and is welded to the inner surface of the bottom end of the tubular structure on the lower end face.
Preferably, the upper energy-consuming steel bar joint, the mechanical connecting piece, the frame-type limiting connecting mechanism, the connecting nut and the lower energy-consuming steel bar joint are all made of high-strength steel, an upper thread section and a lower thread section of the energy-consuming steel bar are made of high-strength steel materials, and a middle section between the upper thread section and the lower thread section is made of low-carbon steel.
Preferably, the frame-type replaceable buckling-restrained damping and energy dissipation device is used for being installed on the outer side of a bottom section of a section-spliced pier, a bearing platform is arranged at the lower end of the bottom section, a plurality of upper sections are arranged at the upper end of the bottom section, the bottom section and the upper sections have the same axis, and the area of the cross section of the bottom section is smaller than that of the cross section of the upper sections.
Preferably, a space for the lower end of the energy dissipation steel bar to move up and down is formed in the hollow section, and the movable distance of the lower end of the energy dissipation steel bar is larger than the sum of the tensile length of the corresponding tension side low-carbon steel bar when the pseudo-static force is loaded to the maximum design displacement and the compression length of the outermost layer of concrete of the compression side bottom section.
Preferably, gaps are formed between the surface of the outer wall of the energy-consumption steel rod and the surface of the inner side wall of the upper insertion opening and between the connecting nut and the surface of the inner side wall of the hollow section.
Preferably, the use method of the frame-type replaceable buckling-restrained damping and energy-dissipating device comprises the following steps: comprises a pre-earthquake installation step and a post-earthquake replacement step.
Preferably, the pre-earthquake installation step comprises: step 1, after assembling the segmental assembled pier, firstly, penetrating the lower end of an energy-consuming steel bar through an upper insertion opening, screwing an upper connecting nut with the lower end of the energy-consuming steel bar, screwing the upper end of the energy-consuming steel bar with a mechanical connecting sleeve, and screwing the upper end of the mechanical connecting sleeve to be flush with the upper end face of the energy-consuming steel bar; step 2, moving the connected component to the bottom section of the section-assembled pier integrally, enabling the upper end of a lower energy-consumption steel bar connector pre-embedded in a bearing platform to penetrate into a lower insertion hole, fixing a frame-type limiting connecting mechanism on the bearing platform by using a connecting nut, and completing the connection of the frame-type limiting connecting mechanism and the lower energy-consumption steel bar connector; and 3, lifting the energy-consuming steel bar upwards to enable the upper end face of the connecting nut to be tightly attached to the inner surface of the upper end of the frame-type limiting connecting mechanism, enabling the upper end face of the energy-consuming steel bar to be aligned to and pre-embedded in the lower end face of the upper section adjacent to the bottom section, and screwing up the mechanical connecting sleeve to complete connection of the energy-consuming steel bar and the upper energy-consuming steel bar connector.
Preferably, the post-earthquake replacing step comprises: step 1, unscrewing a lower connecting nut from the end part of a lower energy-consumption steel bar joint, unscrewing a mechanical connecting sleeve from the end part of an upper energy-consumption steel bar joint, and taking down a frame type limiting connecting mechanism together with an energy-consumption steel bar and the mechanical connecting sleeve; step 2, unscrewing a connecting nut connected with the lower end of the energy-consuming steel bar, then drawing the energy-consuming steel bar out of the framework type limiting connecting mechanism, and unscrewing the mechanical connecting sleeve; and 3, taking a new energy consumption steel bar, installing according to the installation step before the earthquake, and finishing the quick replacement work after the earthquake.
The frame-type replaceable buckling-restrained damping energy dissipation device has the following beneficial effects:
1. simple structure, the installation of being convenient for is favorable to efficient installation and change.
2. Has the stress characteristic of 'only being pulled and not being pressed': the pier swings left and right under the action of earthquake, and when the upper section connected with the energy consumption device is pulled to the bearing platform, the energy consumption steel bar is stretched to dissipate energy due to the limiting action of the upper end and the lower end of the limiting steel plate; when the upper section connected with the energy dissipation device is pressed with the bearing platform, the energy dissipation steel bar can slide relatively to the hollow section of the limiting steel plate without bearing pressure. The stress characteristic can effectively avoid the phenomenon that the energy-consuming steel bar is pressed and bent.
3. The structure is stressed reasonably: the selection of the material properties of each component ensures that the damaged part of the energy consumption device is mainly concentrated on the replaceable energy consumption steel bar under the action of earthquake, and the properties of other connecting components are still intact.
4. The quick restoration after earthquake is convenient: the damaged energy-consuming steel bar can be easily unscrewed and replaced with a new energy-consuming steel bar to play a role again after the earthquake, so that the quick repair after the earthquake is realized.
Drawings
FIG. 1: the frame type limiting connecting mechanism with the plate-shaped structure in the embodiment of the invention is a structural schematic diagram in a stretching state;
FIG. 2: the frame type limiting connecting mechanism with a plate-shaped structure in the embodiment of the invention is a structural schematic diagram in a pressed state;
FIG. 3: is a structural schematic diagram of the invention during installation;
FIG. 4: the frame type limiting connecting mechanism with a tubular structure in the embodiment of the invention is a structural schematic diagram in a stretching state;
FIG. 5: the frame type limiting connecting mechanism with a tubular structure in the embodiment of the invention is a structural schematic diagram in a pressed state;
1: go up power consumption steel bar joint, 2: mechanical connector, 3: energy-consuming steel bar, 4: upper insertion port, 5: end cap, 6: coupling nut, 7: spacing coupling mechanism of frame-type, 8: lower insertion port, 9: lower energy consumption steel bar joint, 10: upper segment, 11: exterior coated steel sheet, 12: bottom segment, 13: steel shim plate, 14: cushion cap, 15: capping beam, 16: prestressed tendon, 17: hollow section, 18: gap, 301: upper thread segment, 302: middle section, 303: a lower thread segment.
Detailed Description
In the following, embodiments of the present invention are described in detail in a stepwise manner, which is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only used for describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, the present invention is not to be construed as being limited thereto.
As shown in fig. 1, 2, and 3:
in one embodiment, the invention relates to a frame-type replaceable buckling-restrained damping and energy-dissipating device, which comprises an upper energy-dissipating steel bar joint 1, a mechanical connecting piece 2, an energy-dissipating steel bar 3, a frame-type limiting connecting mechanism 7, connecting nuts 6 and a lower energy-dissipating steel bar joint 9, wherein the frame-type limiting connecting mechanism 7 is hollow and forms a hollow section 17, through holes penetrating through the upper end surface and the lower end surface of the frame-type limiting connecting mechanism 7 are respectively arranged at the upper end and the lower end surface of the hollow section 17, an upper insertion hole 4 is formed in the upper through hole, a lower insertion hole 8 is formed in the lower through hole, an upper group of connecting nuts 6 and a lower group of connecting nuts 6 are also arranged in the hollow section 17, the lower end of the upper energy-dissipating steel bar joint 1 is detachably and fixedly connected with the mechanical connecting piece 2, the upper end of the energy-dissipating steel, The lower end of the energy-consuming steel bar 3 extends into the upper insertion opening 4 and is in threaded connection with the connecting nut 6 positioned above, the upper end of the lower energy-consuming steel bar joint 9 extends into the lower insertion opening 8 and is in threaded connection with the connecting nut 6 positioned below, and the outer diameter of the connecting nut 6 is larger than the diameters of the upper insertion opening 4 and the lower insertion opening 8; the embodiment provides the basic structure of the invention, wherein the mechanical connector 2 can adopt a member which can detachably and fixedly connect the lower end of the upper energy-consuming steel bar connector 1 and the upper end of the energy-consuming steel bar 3, the frame-type limiting connecting mechanism 7 can be considered as a frame-type connecting mechanism which can provide the hollow section 17 and has a limiting function, when the pier is stretched in earthquake, the connecting nut 6 screwed on the lower end of the energy-consuming steel bar 3 is limited by the upper inserting hole 4, so that the earthquake energy is dissipated by means of stretching of the energy-consuming steel bar 3 and extrusion of the connecting nut 6 and the frame-type limiting connecting mechanism 7, the earthquake-resistant and shock-absorbing effects are achieved, when the pier is extruded, the lower end of the energy-consuming steel bar 3 can be inserted into the hollow section 17 to prevent the energy-consuming steel bar 3 from being pressed and bent, so as to improve the utilization rate of the energy-consuming steel bar 3, in addition, when the energy-consuming steel bar 3 is, the problem that the energy-consuming steel bars are difficult to repair after the earthquake in the prior art is solved.
In a further embodiment, the mechanical connector 2 is a mechanical connection sleeve, the surface of the inner side wall of the mechanical connection sleeve is provided with internal threads, the lower end of the upper energy consumption steel bar joint 1 is provided with external threads and is in threaded connection with the upper part of the surface of the inner side wall of the mechanical connection sleeve, and the upper end of the energy consumption steel bar 3 is provided with an upper threaded section 301 and is in threaded connection with the lower part of the surface of the inner side wall of the mechanical connection sleeve.
In a further embodiment, the frame-type limiting connecting mechanism is a plate-shaped structure made of steel materials, and a hollow section 17 penetrating through the front end face and the rear end face is arranged on the plate-shaped structure; the embodiment provides a simpler and more practical implementation mode, and the assembly and disassembly can be quickly realized through a threaded connection mode.
Different from the previous embodiment, in the present embodiment, the frame-type limiting connection mechanism 7 is a tubular structure made of a steel material, an external thread is arranged at the upper end of the outer side wall surface of the tubular structure, an end cover 5 for closing the upper end of the tubular structure is screwed at the external thread, an upper insertion opening 4 is arranged at the center of the end cover 5, the bottom end of the tubular structure is closed, a lower insertion opening 8 is arranged at the center of the bottom end, the connection nut 6 positioned below is coaxial with the lower insertion opening 8, and the lower end surface of the connection nut is welded to the inner surface of the bottom end of the tubular structure; this embodiment provides another embodiment of the frame-type spacing connection 7, the tubular structure forming a hollow section 17 inside.
In a further embodiment, the upper energy-consuming steel bar joint 1, the mechanical connector 2, the frame-type limiting connection mechanism 7, the connection nut 6 and the lower energy-consuming steel bar joint 9 are all made of high-strength steel, the upper thread section 301 and the lower thread section 303 of the energy-consuming steel bar 3 are both made of high-strength steel, and the middle section 302 between the upper thread section and the lower thread section is made of low-carbon steel; in this embodiment, the ultimate tensile force borne by the broken middle section 302 of the energy-consuming steel bar 3 is lower than the yield tensile force of the member made of high-strength steel, so that the damaged parts of the invention are concentrated on the middle section 302 of the energy-consuming steel bar 3 under the action of an earthquake, and other connecting members are all in an elastic state, so that the structure is stressed reasonably and is convenient to repair after the earthquake.
In a further embodiment, the frame-type replaceable buckling-restrained damping and energy dissipating device is used for being installed on the outer side of a bottom section 12 of a section splicing pier, a bearing platform 14 is arranged at the lower end of the bottom section 12, a plurality of upper sections 10 are arranged at the upper end of the bottom section 12, the bottom section 12 and the upper sections 10 have the same axis, and the cross section area of the bottom section 12 is smaller than that of the upper sections 10; in the implementation, a plurality of the energy-dissipating reinforcing steel bars can be arranged on the periphery of the bottom section 12, so that a good anti-seismic and shock-absorbing effect can be achieved.
In a further embodiment, a space for the lower end of the energy-consuming steel rod 3 to move up and down is formed in the hollow section 17, and the movable distance of the lower end of the energy-consuming steel rod 3 is greater than the sum of the tensile length of the corresponding tension-side low-carbon steel rod 4 and the compression length of the outermost concrete of the compression-side bottom section 12 when the pseudo-static force is loaded to the maximum design displacement; this embodiment provides a more optimized implementation, and by the above arrangement, when the energy consumption steel bar 3 is stretched and then pressed to slide into the hollow section 17, the lower energy consumption steel bar joint 9 contacting one side of the bearing platform 14 can be avoided, so as to avoid the problem of buckling caused by pressing. In addition, the existence of the hollow section 17 enables the length of the energy-consuming steel bar 3 to be reduced, and the problem that the energy-consuming steel bar 3 is easy to bend due to overlong length is further improved.
In a further embodiment, gaps 18 are respectively arranged between the outer wall surface of the energy-consuming steel rod 3 and the inner side wall surface of the upper insertion opening 4 and between the connecting nut 6 and the inner side wall surface of the hollow section 17; in this embodiment, the gap 18 is used to keep the connection nut 6 connected to the lower end of the energy-consuming steel bar 3 having a large space to slide back and forth between the upper and lower end surfaces of the hollow section 17 when the energy-consuming steel bar 3 is elastically and plastically deformed under the action of an earthquake and under the left and right stress of the pier.
In a further embodiment, the use method of the frame-type replaceable buckling-restrained damping and energy-dissipating device comprises the following steps: comprises a pre-earthquake installation step and a post-earthquake replacement step.
In a further embodiment, the pre-earthquake mounting step comprises the steps of 1, after the segment-assembled pier is assembled, firstly, penetrating the lower end of the energy-consuming steel bar 3 through the upper insertion hole 4, screwing the upper connecting nut 6 with the lower end of the energy-consuming steel bar 3, screwing the upper end of the energy-consuming steel bar 3 with the mechanical connecting sleeve, and screwing the upper end of the mechanical connecting sleeve to be flush with the upper end face of the energy-consuming steel bar 3; in this step, if the frame-type limiting connection mechanism 7 is of a tubular structure, the end cover 5 needs to be unscrewed first, and then the connection nut 6 is screwed with the upper thread section 301; step 2, moving the connected component to a bottom section 12 of the section-assembled pier integrally, enabling the upper end of a lower energy-consumption steel bar connector 9 pre-embedded in a bearing platform 14 to penetrate into a lower insertion hole 8, fixing a frame-type limiting connecting mechanism 7 on the bearing platform 14 through a connecting nut 6, and completing connection of the frame-type limiting connecting mechanism 7 and the lower energy-consumption steel bar connector 9; in this step, if the frame-type limiting connection mechanism 7 is of a tubular structure, the end cover 5 needs to be screwed finally; and 3, lifting the energy-consuming steel bar 9 upwards to enable the upper end face of the connecting nut 6 to be tightly attached to the inner surface of the upper end of the frame-type limiting connecting mechanism 7, enabling the upper end face of the energy-consuming steel bar 3 to be aligned to the lower end face of the upper energy-consuming steel bar joint 1 pre-embedded on the outer side of the lower end face of the upper section 10 adjacent to the bottom section 12, screwing up the mechanical connecting sleeve, and completing the connection of the energy-consuming steel bar 3 and the upper energy-consuming steel bar joint 1.
In a further embodiment, the post-shock replacement step comprises: step 1, unscrewing a lower connecting nut 6 from the end part of a lower energy consumption steel bar joint 9, unscrewing a mechanical connecting sleeve from the end part of an upper energy consumption steel bar joint 1, and taking down a frame type limiting connecting mechanism 7 with an energy consumption steel bar 3 and the mechanical connecting sleeve together; step 2, unscrewing a connecting nut 6 connected with the lower end of the energy-consuming steel bar 3, then drawing the energy-consuming steel bar 3 out of the framework type limiting connecting mechanism 7, and unscrewing the mechanical connecting sleeve; in this step, if the frame-type limiting connecting mechanism 7 is of a tubular structure, the end cover 5 needs to be unscrewed first; and 3, taking a new energy consumption steel bar 3, and installing according to the installation steps before the earthquake, so as to finish the quick replacement work after the earthquake.
The action mechanism of the invention is as follows: the energy dissipation and shock absorption mechanism of the invention mainly dissipates energy through occlusion between threads, stretching of the low-carbon steel rod and extrusion force between the connecting nut and the limiting steel plate, and the energy dissipation device is used for assembling the bottom sections of the pier which are easy to damage by sections to increase pier energy dissipation, and is convenient and quick to disassemble and replace after earthquake damage.
Claims (7)
1. A frame-type replaceable buckling-restrained damping and energy-dissipating device is characterized in that: the energy-consuming steel bar joint comprises an upper energy-consuming steel bar joint, a mechanical connecting piece, an energy-consuming steel bar, a frame type limiting connecting mechanism, connecting nuts and a lower energy-consuming steel bar joint, wherein the frame type limiting connecting mechanism is hollow and forms a hollow section, through holes penetrating through the upper end surface and the lower end surface of the frame type limiting connecting mechanism are respectively arranged at the upper end and the lower end of the hollow section, an upper insertion hole is formed in the upper through hole, a lower insertion hole is formed in the lower through hole, an upper group of connecting nuts and a lower group of connecting nuts are further arranged in the hollow section, the lower end of the upper energy-consuming steel bar joint is detachably and fixedly connected with the mechanical connecting piece, the upper end of the energy-consuming steel bar is detachably and fixedly connected with the mechanical connecting piece, a lower thread section is arranged at the lower end of the energy-consuming steel bar joint, the lower end of, the outer diameter of the connecting nut is larger than the diameters of the upper insertion opening and the lower insertion opening;
the frame type limiting connecting mechanism is a plate-shaped structure made of steel materials, and a hollow section penetrating through the front end face and the rear end face is arranged on the plate-shaped structure; or, the frame-type limiting connecting mechanism is a tubular structure made of steel materials, the upper end of the surface of the outer side wall of the tubular structure is provided with an external thread, the external thread is in threaded connection with an end cover for sealing the upper end of the tubular structure, the center of the end cover is provided with an upper insertion hole, the bottom end of the tubular structure is sealed, the center of the bottom end is provided with a lower insertion hole, a connecting nut positioned below is coaxial with the lower insertion hole, and the lower end face of the connecting nut is welded with the inner surface of the bottom end of the tubular structure;
the upper energy-consuming steel bar joint, the mechanical connecting piece, the frame-type limiting connecting mechanism, the connecting nut and the lower energy-consuming steel bar joint are all made of high-strength steel, an upper thread section and a lower thread section of the energy-consuming steel bar are made of high-strength steel materials, and the middle section between the upper thread section and the lower thread section is made of low-carbon steel;
the hollow section forms a space for the lower end of the energy-consuming steel bar to move up and down, and the movable distance of the lower end of the energy-consuming steel bar is larger than the sum of the tensile length of the corresponding tension-side low-carbon steel bar when the pseudo-static force is loaded to the maximum design displacement and the compression length of the outermost concrete of the bottom section of the compression side.
2. A frame-type replaceable buckling restrained energy dissipating device as claimed in claim 1, wherein: the mechanical connecting piece is a mechanical connecting sleeve, the surface of the inner side wall of the mechanical connecting sleeve is provided with an internal thread, the lower end of the upper energy consumption steel bar joint is provided with an external thread and is in threaded connection with the upper part of the surface of the inner side wall of the mechanical connecting sleeve, and the upper end of the energy consumption steel bar is provided with an upper thread section and is in threaded connection with the lower part of the surface of the inner side wall of the mechanical connecting sleeve.
3. A frame-type replaceable buckling restrained energy dissipating device as claimed in claim 2, wherein: the frame type replaceable buckling-restrained damping and energy dissipation device is used for being installed on the outer side of a bottom section of a section splicing pier, a bearing platform is arranged at the lower end of the bottom section, a plurality of upper sections are arranged at the upper end of the bottom section, the bottom section and the upper sections have the same axis, and the area of the cross section of the bottom section is smaller than that of the cross section of the upper sections.
4. A frame-type replaceable buckling restrained energy dissipating device as claimed in claim 3, wherein: gaps are formed between the surface of the outer wall of the energy-consuming steel rod and the surface of the inner side wall of the upper insertion opening and between the connecting nut and the surface of the inner side wall of the hollow section.
5. The use method of a frame-type replaceable buckling-restrained damping and energy dissipating device as claimed in claim 4 comprises: comprises a pre-earthquake installation step and a post-earthquake replacement step.
6. The use method of a frame-type replaceable buckling-restrained damping and energy-dissipating device as claimed in claim 5, wherein: the pre-earthquake installation step comprises: step 1, after assembling the segmental assembled pier, firstly, penetrating the lower end of an energy-consuming steel bar through an upper insertion opening, screwing an upper connecting nut with the lower end of the energy-consuming steel bar, screwing the upper end of the energy-consuming steel bar with a mechanical connecting sleeve, and screwing the upper end of the mechanical connecting sleeve to be flush with the upper end face of the energy-consuming steel bar; step 2, moving the connected component to the bottom section of the section-assembled pier integrally, enabling the upper end of a lower energy-consumption steel bar connector pre-embedded in a bearing platform to penetrate into a lower insertion hole, fixing a frame-type limiting connecting mechanism on the bearing platform by using a connecting nut, and completing the connection of the frame-type limiting connecting mechanism and the lower energy-consumption steel bar connector; and 3, lifting the energy-consuming steel bar upwards to enable the upper end face of the connecting nut to be tightly attached to the inner surface of the upper end of the frame-type limiting connecting mechanism, enabling the upper end face of the energy-consuming steel bar to be aligned to and pre-embedded in the lower end face of the upper section adjacent to the bottom section, and screwing up the mechanical connecting sleeve to complete connection of the energy-consuming steel bar and the upper energy-consuming steel bar connector.
7. The use method of a frame-type replaceable buckling-restrained damping and energy-dissipating device as claimed in claim 5, wherein: the replacement step after the earthquake comprises the following steps: step 1, unscrewing a lower connecting nut from the end part of a lower energy-consumption steel bar joint, unscrewing a mechanical connecting sleeve from the end part of an upper energy-consumption steel bar joint, and taking down a frame type limiting connecting mechanism together with an energy-consumption steel bar and the mechanical connecting sleeve; step 2, unscrewing a connecting nut connected with the lower end of the energy-consuming steel bar, then drawing the energy-consuming steel bar out of the framework type limiting connecting mechanism, and unscrewing the mechanical connecting sleeve; and 3, taking a new energy consumption steel bar, installing according to the installation step before the earthquake, and finishing the quick replacement work after the earthquake.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010161398.2A CN111335146B (en) | 2020-03-10 | 2020-03-10 | Frame type replaceable buckling-restrained damping energy dissipation device and using method thereof |
| PCT/CN2020/089028 WO2021179427A1 (en) | 2020-03-10 | 2020-05-07 | Frame-type replaceable buckling-preventing and shock-absorbing energy consumption apparatus and usage method |
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| CN202010161398.2A CN111335146B (en) | 2020-03-10 | 2020-03-10 | Frame type replaceable buckling-restrained damping energy dissipation device and using method thereof |
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| CN112127497A (en) * | 2020-09-25 | 2020-12-25 | 山东交通职业学院 | Civil engineering antidetonation structure |
| CN112523377A (en) * | 2020-11-25 | 2021-03-19 | 华侨大学 | Replaceable steel pipe energy dissipation support |
| CN114412259B (en) * | 2021-10-11 | 2023-06-09 | 北京建筑大学 | Graded energy dissipation self-resetting assembled pier column |
| CN115233559B (en) * | 2022-08-10 | 2023-03-28 | 北京城建设计发展集团股份有限公司 | Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars |
| CN115977245B (en) * | 2023-03-21 | 2023-05-12 | 湖南大学 | High-energy-consumption high-bearing-capacity self-resetting beam column node |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5657588A (en) * | 1994-11-07 | 1997-08-19 | Axon; Micheal G. | Earthquake shock damper for roadway pillars |
| KR101095959B1 (en) * | 2008-06-09 | 2011-12-19 | (주)엠피기술산업 | Absorbing earthquake joint for bridge structure |
| JP5831734B2 (en) * | 2011-03-09 | 2015-12-09 | 清水建設株式会社 | Inertia mass damper |
| CN102352600A (en) * | 2011-09-28 | 2012-02-15 | 中铁二院工程集团有限责任公司 | Spherical hinge-type vertical inhibiting device for bridge |
| JP6604810B2 (en) * | 2015-10-14 | 2019-11-13 | 日立Ｇｅニュークリア・エナジー株式会社 | Rotating inertia mass damper |
| CN205443914U (en) * | 2016-01-06 | 2016-08-10 | 上海应用技术学院 | Adopt shape memory alloy reinforcing bar to have prefabricated pin -connected panel pier of runback potential energy power |
| CN105603870B (en) * | 2016-02-26 | 2017-07-18 | 东南大学 | The bridge pier power consumption of built-in power consumption reinforcing bar and viscoelastic material layer and anti-crushed structure |
| CN106760010B (en) * | 2016-12-07 | 2019-04-05 | 上海市建筑科学研究院 | A kind of self reset curvature-prevention support based on disk spring |
| CN107059599B (en) * | 2017-04-27 | 2019-01-08 | 北京市市政工程设计研究总院有限公司 | Antidetonation, damping cast-in-situ bridge without support Self-resetting |
| CN206815169U (en) * | 2017-04-27 | 2017-12-29 | 北京市市政工程设计研究总院有限公司 | Without the replaceable energy-dissipating device of bearing Self-resetting bridge |
| CN107338735B (en) * | 2017-06-08 | 2019-09-10 | 东南大学 | The damaged replaceable energy-consuming device of chain type |
| CN107268784B (en) * | 2017-07-11 | 2023-01-06 | 东南大学 | Energy-consumption connecting assembly applied to core area of node of assembled concrete frame |
| CN107401219B (en) * | 2017-09-09 | 2019-06-14 | 万品建筑设计(上海)有限公司 | The node of column and beam and its construction method of the anti-buckling energy-consumption component of replacement easy to install |
| CN108060725B (en) * | 2018-01-09 | 2019-11-12 | 上海市建筑科学研究院 | A kind of tension and compression type self reset curvature-prevention energy dissipation brace |
| JP7086471B2 (en) * | 2018-06-12 | 2022-06-20 | 住友林業株式会社 | Column-beam joint structure |
| CN110158453A (en) * | 2019-07-01 | 2019-08-23 | 沈阳建筑大学 | A kind of BRB and the concatenated damper of carriage and its construction method |
| CN110792188A (en) * | 2019-12-03 | 2020-02-14 | 浙江科技学院 | Replaceable coupling beam with double safety mechanisms |
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- 2020-03-10 CN CN202010161398.2A patent/CN111335146B/en active Active
- 2020-05-07 WO PCT/CN2020/089028 patent/WO2021179427A1/en active Application Filing
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| WO2021179427A1 (en) | 2021-09-16 |
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